The uptime of a Windows machine can be found on the “Performance” tab of the Windows Task Manager. To get the system startup time use one of the following commands:
net stats srv net statistics server net statistics workstation
(The first one being obviously the shortest to type.) This will print some statistics including the system startup time in the line beginning with “Statistics since …”.
If you have PowerShell with the Community Extensions module installed you should absolutely use the
Get-Uptime commandlet which prints the uptime as well as the startup time with one single command:
PS> Get-Uptime Uptime LastBootUpTime ------ -------------- 02:27:26.4306726 23.03.2015 07:53:51
On Linux you can use the
uptime command to get the the uptime and
who -b for the startup time.